2-chloro-3,6-dihydroxy-5-undecylcyclohexa-2,5-diene-1,4-dione

2-bromo-3,6-dihydroxy-5-undecylcyclohexa-2,5-diene-1,4-dione

2,5-dihydroxy-3-iodo-6-undecylcyclohexa-2,5-diene-1,4-dione

(4-acetyloxy-5-chloro-3,6-dioxo-2-undecylcyclohexa-1,4-dien-1-yl) acetate

6-(4-chlorophenyl)imino-7-undecyl-3H-1,3-benzoxazole-2,5-dione